M36W832TE Datasheet, PDF (55/64 Pages) STMicroelectronics – 32 Mbit 2Mb x16, Boot Block Flash Memory and 8 Mbit 512Kb x16 SRAM, Multiple Memory Product

M36W832TE, M36W832BE
Figure 28. Quadruple Word Program Flowchart and Pseudo Code
Start
Write 56h
Write Address 1
& Data 1 (3)
Write Address 2
& Data 2 (3)
Write Address 3
& Data 3 (3)
Write Address 4
& Data 4 (3)
Read Status
Register
quadruple_word_program_command (addressToProgram1, dataToProgram1,
addressToProgram2, dataToProgram2,
addressToProgram3, dataToProgram3,
addressToProgram4, dataToProgram4)
{
writeToFlash (any_address, 0x56) ;
writeToFlash (addressToProgram1, dataToProgram1) ;
/*see note (3) */
writeToFlash (addressToProgram2, dataToProgram2) ;
/*see note (3) */
writeToFlash (addressToProgram3, dataToProgram3) ;
/*see note (3) */
writeToFlash (addressToProgram4, dataToProgram4) ;
/*see note (3) */
/*Memory enters read status state after
the Program command*/
do {
status_register=readFlash (any_address) ;
/* EF or GF must be toggled*/
NO
b7 = 1
YES
NO
b3 = 0
YES
NO
b4 = 0
YES
NO
b1 = 0
YES
End
} while (status_register.b7== 0) ;
VPPF Invalid
Error (1, 2)
if (status_register.b3==1) /*VPPF invalid error */
error_handler ( ) ;
Program
Error (1, 2)
if (status_register.b4==1) /*program error */
error_handler ( ) ;
Program to Protected
Block Error (1, 2)
if (status_register.b1==1) /*program to protect block error */
error_handler ( ) ;
}
AI07950
Note: 1. Status check of b1 (Protected Block), b3 (VPPF Invalid) and b4 (Program Error) can be made after each program operation or after
a sequence.
2. If an error is found, the Status Register must be cleared before further Program/Erase operations.
3. Address 1 to Address 4 must be consecutive addresses differing only for bits A0 and A1.
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